<template>
<div>
  <base-attr></base-attr>
  <extend-attr></extend-attr>
  <parent-attr></parent-attr>
</div>
</template>
<script>
  export default {
  components: {
      BaseAttr: () => import('./BaseAttr'),
      ExtendAttr: () => import('./ExtendAttr'),
      ParentAttr: () => import('./ParentAttr')
    }
  }
</script>